CA1286638C - Infusion bag for making in particular coffee beverages - Google Patents
Infusion bag for making in particular coffee beveragesInfo
- Publication number
- CA1286638C CA1286638C CA000525196A CA525196A CA1286638C CA 1286638 C CA1286638 C CA 1286638C CA 000525196 A CA000525196 A CA 000525196A CA 525196 A CA525196 A CA 525196A CA 1286638 C CA1286638 C CA 1286638C
- Authority
- CA
- Canada
- Prior art keywords
- subchambers
- hollow space
- infusion bag
- transverse
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001802 infusion Methods 0.000 title claims abstract description 57
- 235000013353 coffee beverage Nutrition 0.000 title abstract description 25
- 238000005086 pumping Methods 0.000 claims abstract description 29
- 235000013361 beverage Nutrition 0.000 claims abstract description 10
- 239000011796 hollow space material Substances 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 21
- 239000000126 substance Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 239000000109 continuous material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 4
- 230000003247 decreasing effect Effects 0.000 claims 2
- 230000003993 interaction Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
- B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
- B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags
- B65D85/812—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea bags with features facilitating their manipulation or suspension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B29/00—Packaging of materials presenting special problems
- B65B29/02—Packaging of substances, e.g. tea, which are intended to be infused in the package
- B65B29/028—Packaging of substances, e.g. tea, which are intended to be infused in the package packaging infusion material into filter bags
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Tea And Coffee (AREA)
- Apparatus For Making Beverages (AREA)
Abstract
Abstract:
For preparing infusion beverages, in particular of ground roasted coffee, it is necessary to largely ex-tract the ground roasted coffee within a short time. For this purpose, an infusion bag for making in particular cup portions is made such that, by up and down movements of an actuating handle attached to the infusion bag, pumping movements are executed which, in interaction with a pumping chamber , produce a throughflow of two or more subchambers.
For preparing infusion beverages, in particular of ground roasted coffee, it is necessary to largely ex-tract the ground roasted coffee within a short time. For this purpose, an infusion bag for making in particular cup portions is made such that, by up and down movements of an actuating handle attached to the infusion bag, pumping movements are executed which, in interaction with a pumping chamber , produce a throughflow of two or more subchambers.
Description
12t~ 3~
The invention relates to an infusion bag of filter material, in particular filter paper, for making beverages in a container from extractable substances, in particular ground roasted coffee, ~ith legs ~hich are connected to one another at the upper end and have subchambers for ac-commodating one subPortion each of the roasted coffee or the like being formed by folding the double-layered filter paper in a U-shape.
In the case of certain extractable substances, in particular in the case of ground roasted coffee, success has not been achieved hitherto in the preparation of 1S qualitatively satisfactory beverages by means of infusion bags. The reason for this is that, for adequate extrac-tion of the roasted coffee, ~ater has to flo~ through the coffee portion in order to ensure adequate extract;on.
On the other hand, an adequately impervious filter paper is necessary in order to largely avoid the escape of solid particles from the infusion bag into the beverage.
The object of the invention is to make an infusion bag availab~e ~hich is suitable in particular for the quick preparation of coffee beverages of roasted coffee ~ithout a reduction in quality co0pared ~ith conventionally prepared coffee beverages.
To achieve this object, the infusion bag accord-ing to the invention is characteri~ed in that the subcham-bers, ~ith their upper edges, are connected (together) to a rigid actuating handle in such a uay that, by up and do~n movements of the actuating handle, the subchambers lZ~
exetute oppositely directed transverse movements while supported on a container bottom (cup bottom).
The invention is based on the discovery that an infusion bag for the preparation of coffee beverages in S particular has to be made such that a "pumping movement"
which is otherwise not usual for the preparation of bev-erages by means of infusion bags can be transm;tted to the infusion bag by means of the actuating handle in such a way that a through-flow effect and thus an effective ex-traction of short duration is achieved by this movement.
The infusion bag is accordingly designed accordingto the invention such that, by up and down movement of the largely rigid actuating handle, a hollow space - pumping chamber - which varies in shape and si~e is created bet-ween closed subchambers having subportions. As a resultof the movement described, water flows into this hollow space and emerges again, name(y through the subchambers.
By the up and down movement of the actuating handle, de-formation pressure is exerted on the infusion bag supported ZO on the container bottom (cup bottom), which deformation pressure leads to an increase and a reduction in the hol-~ow space (pumping chamber) and thus to the formation of a vacuum and a positive pressure in the latter.
The subchambers are connected to one another and to the actuating handle respectively at the upper and lower transverse edge, so that a variable hollow space is formed as a pumping chamber between the chambers.
The effect which is intended with the invention can be improved by the ho~low space (pumping chamber) formed between the subchambers being provided at the open sides with c~osure flaps which act like a non-return valve during the up and down movement of the actuating handle.
A higher internal pressure can thereby build up in the pumping chamber, which internal pressure forces the flow of the water outwards through the subchambers.
An infusion bag of such a configuration is made according to the invention from two simply designed blanks of filter material (filter paper). The subchambers are at the same time closed all round by welded or bonded 12~
seams. An outer blank is made with a ~arger ~idth than the inner blank in such a way that a lateral strip pro-jection is formed which, after folding over, forms the t losure flaps (valve flaps).
S According to the invention, the subchambers are kept at a greater distance from one another in the lower area, namely by a filter material strip free of roasted coffee and formed preferably by a correspondingly wide lower transverse seam. The subchambers can thereby exe-cute greater transverse movements relative to each other during the pumping movements.
Further features of the invention relate to the design of the infusion bag and also to its manufacture.
Exemplary embodiments of the infusion bag accord-ing to the invention and also of devices for manufacturing it are schematically shown in the drawings, in ~hich:
Figure 1 shows an exemplary embodiment of a (coffee) in-fusion bag in perspective representation, Figure 2 shows a vertical section or a side vie~ of the 2û infusion bag according to Figure 1, Figure 3 shows a phase of the preparation of a (coffee) beverage in side view or in vertical section, Figure 4 shows another phase of the beverage preparation in a representation similar to Figure 3, Figures show various phases in the preparation of a 5 to 10 (coffee) beverage with another exemplary embodi-ment of an infusion bag, in each case in verti-cal section or in side view and in horizontal section, 0 Figure 11 shows an intermediate product for the manufac-ture of an infusion bag according to Figures 5 to 10 in plan vie~, figure 12 shovs a cross-section for the representation ac-cording to Figure 11, 5 Figure 13 sho~s a production internediate position of an infusion bag in cross-section, Figure 14 shous a cross-sectional representation of the ready-folded infusion bag from blanks according to Figure 11, lZl~
Figure 15 sho~s a further embodiment of an infusion bag in cross-section analogous to Figure 13, Figure 16 shous the ready-folded infusion bag for the ex-emplary embodiment according to Figure 15, S Figure 17 shows a device for manufacturing infusion bags in the embodiment according to Figures 15 and 16 in considerably simplified representation, Figure 18 sho~s process steps and (schematically) another exemplary embodiment of a device for manufactur-ing infusion bags, like~ise in simplified representation.
The infusion bags sho~n of sealable filter paperare primarily intended for the preparation of coffe be-verages from ground roasted coffee. Each infusion bag consists of several, namely t~o subchambers 20 and 21, each of which is used for accommodating a subportion Z2 and 23 of ground roasted coffee. The total quantity of the ground roasted coffee corresponds to the requisite coffee portion for making a coffee beverage, in particu-lar a cup portion. For this preferred range of application of the preparation of an individual portion of the coffee beverage in a cup 24, the total portion of ground roasted coffee ;s about 7.5 9.
The subchambers 20 and 21 are formed by chamber walls 25 and 26, and 27 and 28 respectively of filter material, in particular filter paper. The chamber walls 25 to 28 are connected to one another at the sides by side seams 29 and 30 and also at the top and bottom by trans-verse seams 31 and 32, so that the subchambers 20 and 21 3û have an internal volume of adequate size. The subchambers 20 and 21 are connected to one another in the area of the lower transverse seams 32. The upper transverse seams 31 are fixed to an actuating member, namely to an actuat-ing handle 33.
The actuating handle 33 is made such that, when the infusion bag is manipulated, a certain pressure can be exerted on the object consisting of the subchambers 20 and 21 without this causing significant deformation of the actuating handle 33. For this purpose, the latter , 12~
preferably consists of plastic, e 9. rigid PVC. The ac-tuating handle 33 can be punched out as a shaped part, for example from plate material. For gripping the infus;on bag, the actuating handle 33 is here provided vith a cir-cular widened portion 34 at the UF)Per end. For connectingto the subchambers 20 and 21 and also for the transverse stiffening of the infusion bag, the actuating handle 33, at a lower end, is provided with a transverse web 35 which extends approximately over the width of the subchambers 20 and 21. The upper transverse seams 31 are connected to the transverse web 35, in particular welded or bonded to its outer sides.
The manipulation of the infusion bag thus made follows primarily from Figures 3 and 4. The infusion bag is gripped in the area of the widened portion 34 of the actuating handle 33 and, with the area of the subchambers 20 and 21, is dipped into the cup 24 filled uith hot ~ater.
The lower edge of the subchambers 20 and 21, namely the transverse seams 32 connected to one another, is suppor-ted on the cup bottom 36. The halves of the infusionbag which are formed from the subchambers 20 and 21 are moved relative to one another in opposite directions by moving the actuating handle 33 up and down. During this procedure, the hollow space comes into effect which is formed between the units consisting of the subchambers 20 and 21 and which acts as a pumping chamber 37. The latter, during the up and down movements of the actuating handle 33, is changed in size and shape. ~hen the infu-sion bag is dipped into the water for infusing or ;s sup-ported on the cup bottom 36, the pumping chamber 37, whichis relatively narrow in the initial position (Fig.2), is opened out, as a result of ~hich water for infusing not only flows via the free, open sides into the pumping cham-ber 37 but also through the subchambers 20 and 21. During further movement, namely during the movement of the actua-ting handle 33 doun against the cup bottom 36, the pumping chamber 37 is reduced again, as a result of uhich the pene-trated water flows laterally and outwards through the sub-chambers 20 and 21 (Fig.3). Upon renewed upwards movement, 12~ 8 the water flows in the opposite direction, as shown in Figure 4.
By severaL such "pumping Inovements" vater for in-fusing optimally flows through the subchambers 2û u;thin a short time and the subportions 22 and 23 are accordingly extracted.
In order to improve the flow through the subcham-bers 20 and 21, measures are provided according to the exemplary embodiment of Figure 5 ff. which, during the re-duction phase of the pumping chamber 37 filled with water,prevent or reduce flowing off via side openings 38 and 39. for this purpose, in the improved embodiment, shut-off flaps 4û and 41, and 42 and 43 respectively, in the area of the side openings 38 and 39, are installed between the subchambers 20 and 21 and are arranged such that, dur-ing pressurizing, they are moved into a closing position (Fig.6) by the water for infusing which is located in the pumping chamber 37 and is forcing its way outvards. The shut-off flaps 4û to 43 accordingly act like non-return valves.
In the exemplary embodiment shown, the shut-off flaps 4û to 43 - of paper, plastic or the like - are fixed with external edges to the upright side seams 29 and 30 of the subchambers 20 and 21, namely on the side facing towards the pumping chamber 37. The fixing is such that, in the initial position, when the infusion bag is folded flat, the shut-off flaps 40 to 43 are likewise folded flat in between the subchambers 2û and 21 ~hile bearing against the facing inner chamber walls 26 and 27. When the infu-sion bag is opened out during the pumping movements, namelywhen the pumping chamber 37 is being filled vith water for infusing, the shut-off flaps 40 to 43 are moved into a position in ~hich, on the one hand, they are connected to the side seams 29 and 30 and, on the other hand, ~ith free internal sealing lips 44 and 45, bear against one another approximately in the centre plane of the pumping chamber 37. This closing position of the shut-off flaps 40 to 43 is supported or stabilized by the relevant shut-off members coinciding at the top and bottom, namely by lZl~i38 being bound in between the transverse seams 31 and 32.
~ y the shutting off ot the side openings 38 and 39, the water, during the following reduction in the vol-ume of the pumping chamber 37, can no longer flow off predominantly via the side openings 38 and 39 but increas-ingly comes through the subchambers 2û and 21 with the ef-fect of an accelerated, effective extraction (Figs.5 and 6).
During the following upwards movement of the act-1û uating handle 33, that is, after the pumping chamber 37has been largeLy emptied, the subchambers 20 and 21 move into a mutual relative position in which water flows from outside into the pumping chamber 37, namely via the side openings 38 and 39. The shut-off flaps 40 to 43 are at the same time moved in the direction of the inner chamber walls 26 and 27, so that the inflow effect can take place unimpaired (Figs.7 and 8).
After the pumping chambers 37 are filled with water for infusing, namely after the upper end position of the actuating handle is reached, the side openings 38 and 39 are again closed by the shut-off flaps 40 to 43 by the build up of internal pressure in the pumping chamber 37 (Figs.9 and 10).
filter bags can also be manufactured on a large scale in economical manner in the embodiment according to Figures S to 10. In the design according to Figures 11 to 14, the subchambers 20 and 21, including the shut-off flaps 40 to 43, consist of two blanks 46 and 47 of filter paper. The blank 46 which is located on the outside in the finished infusion bag is dimensioned with a larger width than the internal blank 47 in such a way that blank strips 48 and 49, in an intermediate position according to Figures 11 and 12, project away laterally beyond the inner blank 47. In this position, the blanks 46 and 47 are connected to one another by the side seams 29 and 30 and also by the transverse seams 31 and 32, the latter combined into a common transverse seam of double width, after the subportions 22 and 23 have been poured into the forming subchambers 20 and 21 beforehand or during the 12~
connection of the blanks 46 and 47 to one another. In an elongated arrangement of the object, the blank strips 48 and 49 are then folded over against the free side (inner side) of the inner blank 47 (Fig.13). Thus the shut-off flaps 40 to 43 develop, ~ith the b~ank strips 48 and 49 being of such a size that they extend approximately up to the centre of the subchambers 20 and 21.
Alternatively, the internal blank 47 can also oe made ~ith a larger width, with blank strips on the edge side being foLded over inwards in order to form the shut-off flaps 40 to 43 as described.
The more or less finished infusion bag is now folded over in the area of the lower transverse seams 32 directly adjoining one another, so that the subchambers 20 and 21 are located directly adjacent to one another.
The upper transverse seams 31 are no~ connected to one another or to the actuating handle 33. During this fold-ing process, the shut-off flaps 40 to 43 automatically move into the effective position.
An infusion bag embodiment which is likewise es-pecially suitable for large-scale production is sho~n in Figures 15 and 16, in each case in the cross-section of a subchamber 20 and 21. The blanks 46 and 47, which are of the same width or same size, are connected to one an-other in the manner described by welding or bonding while the subchambers 20 and 21 are formed and the subportions 22 and 23 are accommodated. In addition, material strips 50 and 51 sitting against the internal blank 47 are at-tached to the (subsequent) inner side or to the internal blank 47 and are connected to the blank 47 in the area of the side seams 29 and 30 rùnning in the longitudinal di-rection. The material strips 50 and 51 - of paper, plastic or the like - are so wide that they extend virtually up to the centre plane of the sùbchambers 20 and 21.
The continuous object thus formed is then cut through in the area of adjacent transverse seams 32, so that units develop approximately in the embodiment of Figure 11 - without blank strips 48 and 49. The infusion bag develops by folding over in the area of the lower 12~
transverse seams 32, to which infusion bag the actuating handle is still to be attached.
In the production of infusion bags of this type, the procedure can be adopted as shown schematically in Figure 17. The track-shaped material for forming the blanks 46 and 47 is drawn off continuously from reels 52 and 53. ln the area of form rollers 54 and 55 located opposite one another, the tracks are guided together and connected to one another while the side seams 29 and 30 and also the transverse seams 31 and 32 are formed, with at the same time the coffee portions or subportions 22 and 23 being poured from above into the forming subchambers 20 and 21 via a filling funnel 56.
A further material track 57 of the same width runs in on the side of the track for the blanks 47, which material track 57, in the area of the form rollers 54 and 55, is connected to the facing track for the blanks 47.
The material track 57 is first cut through in the longitu-dinal centre by a fixed blade 58, so that the material strips Sû and 51 are continuously formed from the material track 57. Largely finished infusion bags filled with sub-portions 22 and 23 are accordingly produced in a work sta-tion, which infusion bags merely have to be cut off to length and connected to the actuating handle.
In Figure 18, details on the manufacture of infu-sion bags from a continuous material tube 59 of (sealable) filter paper are shown in individual process stages I to VI. The material tube 59 is formed on a tubular filling nozzle 60 from a flat, strip-shaped material track 61 and, moreover, is at the same time provided in conventional manner with a tube seam (not shown) running in the longi-tudinal direction of the material tube 59.
The material tube 59 is moved in stages on the filling nozzle 60, namely drawn off downwarcds. During a stoppage phase, a subportion 22/23 of the roasted coffee is poured into the material tube via the filling nozzle 60. In the area beneath the fiLling nozzle 60, a trans-verse seam 31 or 32 is in each case then applied between successive subportions 22 and 23 with the subchambers 20 - 1o -and 21 being made. Moreover, the material tube 59 is cut through in the area of the (upper~ transverse seam 31, so that elongated objects develop having t~o filled subcham-bers 20 and 21.
S After they are turned over into a horizontal posi-tion according to the process step II, these objects are folded in a U-shape in the area of the lo~er or centre transverse seam 32 (process step III). The actuating handle 33 is fed in from above in such a ~ay that the transverse ~eb 35 moves into the area bet~een the upper (half) transverse seams 31. Sea~ing is effected again in the area of the transverse seams 31 by sealing members 62 ~hile the transverse seams 31 are connected to the trans-verse ~eb 35 of the actuating handle 33.
The infus;on bag is no~ finished according to pro-cess stage IV. The actuating handle 33 is then swung via an intermediate position according to V into a packable position VI and bears against one of the subchambers 20 and 21. The finished infusion bag is then ~rapped in an aroma-tight foil packing.
The invention relates to an infusion bag of filter material, in particular filter paper, for making beverages in a container from extractable substances, in particular ground roasted coffee, ~ith legs ~hich are connected to one another at the upper end and have subchambers for ac-commodating one subPortion each of the roasted coffee or the like being formed by folding the double-layered filter paper in a U-shape.
In the case of certain extractable substances, in particular in the case of ground roasted coffee, success has not been achieved hitherto in the preparation of 1S qualitatively satisfactory beverages by means of infusion bags. The reason for this is that, for adequate extrac-tion of the roasted coffee, ~ater has to flo~ through the coffee portion in order to ensure adequate extract;on.
On the other hand, an adequately impervious filter paper is necessary in order to largely avoid the escape of solid particles from the infusion bag into the beverage.
The object of the invention is to make an infusion bag availab~e ~hich is suitable in particular for the quick preparation of coffee beverages of roasted coffee ~ithout a reduction in quality co0pared ~ith conventionally prepared coffee beverages.
To achieve this object, the infusion bag accord-ing to the invention is characteri~ed in that the subcham-bers, ~ith their upper edges, are connected (together) to a rigid actuating handle in such a uay that, by up and do~n movements of the actuating handle, the subchambers lZ~
exetute oppositely directed transverse movements while supported on a container bottom (cup bottom).
The invention is based on the discovery that an infusion bag for the preparation of coffee beverages in S particular has to be made such that a "pumping movement"
which is otherwise not usual for the preparation of bev-erages by means of infusion bags can be transm;tted to the infusion bag by means of the actuating handle in such a way that a through-flow effect and thus an effective ex-traction of short duration is achieved by this movement.
The infusion bag is accordingly designed accordingto the invention such that, by up and down movement of the largely rigid actuating handle, a hollow space - pumping chamber - which varies in shape and si~e is created bet-ween closed subchambers having subportions. As a resultof the movement described, water flows into this hollow space and emerges again, name(y through the subchambers.
By the up and down movement of the actuating handle, de-formation pressure is exerted on the infusion bag supported ZO on the container bottom (cup bottom), which deformation pressure leads to an increase and a reduction in the hol-~ow space (pumping chamber) and thus to the formation of a vacuum and a positive pressure in the latter.
The subchambers are connected to one another and to the actuating handle respectively at the upper and lower transverse edge, so that a variable hollow space is formed as a pumping chamber between the chambers.
The effect which is intended with the invention can be improved by the ho~low space (pumping chamber) formed between the subchambers being provided at the open sides with c~osure flaps which act like a non-return valve during the up and down movement of the actuating handle.
A higher internal pressure can thereby build up in the pumping chamber, which internal pressure forces the flow of the water outwards through the subchambers.
An infusion bag of such a configuration is made according to the invention from two simply designed blanks of filter material (filter paper). The subchambers are at the same time closed all round by welded or bonded 12~
seams. An outer blank is made with a ~arger ~idth than the inner blank in such a way that a lateral strip pro-jection is formed which, after folding over, forms the t losure flaps (valve flaps).
S According to the invention, the subchambers are kept at a greater distance from one another in the lower area, namely by a filter material strip free of roasted coffee and formed preferably by a correspondingly wide lower transverse seam. The subchambers can thereby exe-cute greater transverse movements relative to each other during the pumping movements.
Further features of the invention relate to the design of the infusion bag and also to its manufacture.
Exemplary embodiments of the infusion bag accord-ing to the invention and also of devices for manufacturing it are schematically shown in the drawings, in ~hich:
Figure 1 shows an exemplary embodiment of a (coffee) in-fusion bag in perspective representation, Figure 2 shows a vertical section or a side vie~ of the 2û infusion bag according to Figure 1, Figure 3 shows a phase of the preparation of a (coffee) beverage in side view or in vertical section, Figure 4 shows another phase of the beverage preparation in a representation similar to Figure 3, Figures show various phases in the preparation of a 5 to 10 (coffee) beverage with another exemplary embodi-ment of an infusion bag, in each case in verti-cal section or in side view and in horizontal section, 0 Figure 11 shows an intermediate product for the manufac-ture of an infusion bag according to Figures 5 to 10 in plan vie~, figure 12 shovs a cross-section for the representation ac-cording to Figure 11, 5 Figure 13 sho~s a production internediate position of an infusion bag in cross-section, Figure 14 shous a cross-sectional representation of the ready-folded infusion bag from blanks according to Figure 11, lZl~
Figure 15 sho~s a further embodiment of an infusion bag in cross-section analogous to Figure 13, Figure 16 shous the ready-folded infusion bag for the ex-emplary embodiment according to Figure 15, S Figure 17 shows a device for manufacturing infusion bags in the embodiment according to Figures 15 and 16 in considerably simplified representation, Figure 18 sho~s process steps and (schematically) another exemplary embodiment of a device for manufactur-ing infusion bags, like~ise in simplified representation.
The infusion bags sho~n of sealable filter paperare primarily intended for the preparation of coffe be-verages from ground roasted coffee. Each infusion bag consists of several, namely t~o subchambers 20 and 21, each of which is used for accommodating a subportion Z2 and 23 of ground roasted coffee. The total quantity of the ground roasted coffee corresponds to the requisite coffee portion for making a coffee beverage, in particu-lar a cup portion. For this preferred range of application of the preparation of an individual portion of the coffee beverage in a cup 24, the total portion of ground roasted coffee ;s about 7.5 9.
The subchambers 20 and 21 are formed by chamber walls 25 and 26, and 27 and 28 respectively of filter material, in particular filter paper. The chamber walls 25 to 28 are connected to one another at the sides by side seams 29 and 30 and also at the top and bottom by trans-verse seams 31 and 32, so that the subchambers 20 and 21 3û have an internal volume of adequate size. The subchambers 20 and 21 are connected to one another in the area of the lower transverse seams 32. The upper transverse seams 31 are fixed to an actuating member, namely to an actuat-ing handle 33.
The actuating handle 33 is made such that, when the infusion bag is manipulated, a certain pressure can be exerted on the object consisting of the subchambers 20 and 21 without this causing significant deformation of the actuating handle 33. For this purpose, the latter , 12~
preferably consists of plastic, e 9. rigid PVC. The ac-tuating handle 33 can be punched out as a shaped part, for example from plate material. For gripping the infus;on bag, the actuating handle 33 is here provided vith a cir-cular widened portion 34 at the UF)Per end. For connectingto the subchambers 20 and 21 and also for the transverse stiffening of the infusion bag, the actuating handle 33, at a lower end, is provided with a transverse web 35 which extends approximately over the width of the subchambers 20 and 21. The upper transverse seams 31 are connected to the transverse web 35, in particular welded or bonded to its outer sides.
The manipulation of the infusion bag thus made follows primarily from Figures 3 and 4. The infusion bag is gripped in the area of the widened portion 34 of the actuating handle 33 and, with the area of the subchambers 20 and 21, is dipped into the cup 24 filled uith hot ~ater.
The lower edge of the subchambers 20 and 21, namely the transverse seams 32 connected to one another, is suppor-ted on the cup bottom 36. The halves of the infusionbag which are formed from the subchambers 20 and 21 are moved relative to one another in opposite directions by moving the actuating handle 33 up and down. During this procedure, the hollow space comes into effect which is formed between the units consisting of the subchambers 20 and 21 and which acts as a pumping chamber 37. The latter, during the up and down movements of the actuating handle 33, is changed in size and shape. ~hen the infu-sion bag is dipped into the water for infusing or ;s sup-ported on the cup bottom 36, the pumping chamber 37, whichis relatively narrow in the initial position (Fig.2), is opened out, as a result of ~hich water for infusing not only flows via the free, open sides into the pumping cham-ber 37 but also through the subchambers 20 and 21. During further movement, namely during the movement of the actua-ting handle 33 doun against the cup bottom 36, the pumping chamber 37 is reduced again, as a result of uhich the pene-trated water flows laterally and outwards through the sub-chambers 20 and 21 (Fig.3). Upon renewed upwards movement, 12~ 8 the water flows in the opposite direction, as shown in Figure 4.
By severaL such "pumping Inovements" vater for in-fusing optimally flows through the subchambers 2û u;thin a short time and the subportions 22 and 23 are accordingly extracted.
In order to improve the flow through the subcham-bers 20 and 21, measures are provided according to the exemplary embodiment of Figure 5 ff. which, during the re-duction phase of the pumping chamber 37 filled with water,prevent or reduce flowing off via side openings 38 and 39. for this purpose, in the improved embodiment, shut-off flaps 4û and 41, and 42 and 43 respectively, in the area of the side openings 38 and 39, are installed between the subchambers 20 and 21 and are arranged such that, dur-ing pressurizing, they are moved into a closing position (Fig.6) by the water for infusing which is located in the pumping chamber 37 and is forcing its way outvards. The shut-off flaps 4û to 43 accordingly act like non-return valves.
In the exemplary embodiment shown, the shut-off flaps 4û to 43 - of paper, plastic or the like - are fixed with external edges to the upright side seams 29 and 30 of the subchambers 20 and 21, namely on the side facing towards the pumping chamber 37. The fixing is such that, in the initial position, when the infusion bag is folded flat, the shut-off flaps 40 to 43 are likewise folded flat in between the subchambers 2û and 21 ~hile bearing against the facing inner chamber walls 26 and 27. When the infu-sion bag is opened out during the pumping movements, namelywhen the pumping chamber 37 is being filled vith water for infusing, the shut-off flaps 40 to 43 are moved into a position in ~hich, on the one hand, they are connected to the side seams 29 and 30 and, on the other hand, ~ith free internal sealing lips 44 and 45, bear against one another approximately in the centre plane of the pumping chamber 37. This closing position of the shut-off flaps 40 to 43 is supported or stabilized by the relevant shut-off members coinciding at the top and bottom, namely by lZl~i38 being bound in between the transverse seams 31 and 32.
~ y the shutting off ot the side openings 38 and 39, the water, during the following reduction in the vol-ume of the pumping chamber 37, can no longer flow off predominantly via the side openings 38 and 39 but increas-ingly comes through the subchambers 2û and 21 with the ef-fect of an accelerated, effective extraction (Figs.5 and 6).
During the following upwards movement of the act-1û uating handle 33, that is, after the pumping chamber 37has been largeLy emptied, the subchambers 20 and 21 move into a mutual relative position in which water flows from outside into the pumping chamber 37, namely via the side openings 38 and 39. The shut-off flaps 40 to 43 are at the same time moved in the direction of the inner chamber walls 26 and 27, so that the inflow effect can take place unimpaired (Figs.7 and 8).
After the pumping chambers 37 are filled with water for infusing, namely after the upper end position of the actuating handle is reached, the side openings 38 and 39 are again closed by the shut-off flaps 40 to 43 by the build up of internal pressure in the pumping chamber 37 (Figs.9 and 10).
filter bags can also be manufactured on a large scale in economical manner in the embodiment according to Figures S to 10. In the design according to Figures 11 to 14, the subchambers 20 and 21, including the shut-off flaps 40 to 43, consist of two blanks 46 and 47 of filter paper. The blank 46 which is located on the outside in the finished infusion bag is dimensioned with a larger width than the internal blank 47 in such a way that blank strips 48 and 49, in an intermediate position according to Figures 11 and 12, project away laterally beyond the inner blank 47. In this position, the blanks 46 and 47 are connected to one another by the side seams 29 and 30 and also by the transverse seams 31 and 32, the latter combined into a common transverse seam of double width, after the subportions 22 and 23 have been poured into the forming subchambers 20 and 21 beforehand or during the 12~
connection of the blanks 46 and 47 to one another. In an elongated arrangement of the object, the blank strips 48 and 49 are then folded over against the free side (inner side) of the inner blank 47 (Fig.13). Thus the shut-off flaps 40 to 43 develop, ~ith the b~ank strips 48 and 49 being of such a size that they extend approximately up to the centre of the subchambers 20 and 21.
Alternatively, the internal blank 47 can also oe made ~ith a larger width, with blank strips on the edge side being foLded over inwards in order to form the shut-off flaps 40 to 43 as described.
The more or less finished infusion bag is now folded over in the area of the lower transverse seams 32 directly adjoining one another, so that the subchambers 20 and 21 are located directly adjacent to one another.
The upper transverse seams 31 are no~ connected to one another or to the actuating handle 33. During this fold-ing process, the shut-off flaps 40 to 43 automatically move into the effective position.
An infusion bag embodiment which is likewise es-pecially suitable for large-scale production is sho~n in Figures 15 and 16, in each case in the cross-section of a subchamber 20 and 21. The blanks 46 and 47, which are of the same width or same size, are connected to one an-other in the manner described by welding or bonding while the subchambers 20 and 21 are formed and the subportions 22 and 23 are accommodated. In addition, material strips 50 and 51 sitting against the internal blank 47 are at-tached to the (subsequent) inner side or to the internal blank 47 and are connected to the blank 47 in the area of the side seams 29 and 30 rùnning in the longitudinal di-rection. The material strips 50 and 51 - of paper, plastic or the like - are so wide that they extend virtually up to the centre plane of the sùbchambers 20 and 21.
The continuous object thus formed is then cut through in the area of adjacent transverse seams 32, so that units develop approximately in the embodiment of Figure 11 - without blank strips 48 and 49. The infusion bag develops by folding over in the area of the lower 12~
transverse seams 32, to which infusion bag the actuating handle is still to be attached.
In the production of infusion bags of this type, the procedure can be adopted as shown schematically in Figure 17. The track-shaped material for forming the blanks 46 and 47 is drawn off continuously from reels 52 and 53. ln the area of form rollers 54 and 55 located opposite one another, the tracks are guided together and connected to one another while the side seams 29 and 30 and also the transverse seams 31 and 32 are formed, with at the same time the coffee portions or subportions 22 and 23 being poured from above into the forming subchambers 20 and 21 via a filling funnel 56.
A further material track 57 of the same width runs in on the side of the track for the blanks 47, which material track 57, in the area of the form rollers 54 and 55, is connected to the facing track for the blanks 47.
The material track 57 is first cut through in the longitu-dinal centre by a fixed blade 58, so that the material strips Sû and 51 are continuously formed from the material track 57. Largely finished infusion bags filled with sub-portions 22 and 23 are accordingly produced in a work sta-tion, which infusion bags merely have to be cut off to length and connected to the actuating handle.
In Figure 18, details on the manufacture of infu-sion bags from a continuous material tube 59 of (sealable) filter paper are shown in individual process stages I to VI. The material tube 59 is formed on a tubular filling nozzle 60 from a flat, strip-shaped material track 61 and, moreover, is at the same time provided in conventional manner with a tube seam (not shown) running in the longi-tudinal direction of the material tube 59.
The material tube 59 is moved in stages on the filling nozzle 60, namely drawn off downwarcds. During a stoppage phase, a subportion 22/23 of the roasted coffee is poured into the material tube via the filling nozzle 60. In the area beneath the fiLling nozzle 60, a trans-verse seam 31 or 32 is in each case then applied between successive subportions 22 and 23 with the subchambers 20 - 1o -and 21 being made. Moreover, the material tube 59 is cut through in the area of the (upper~ transverse seam 31, so that elongated objects develop having t~o filled subcham-bers 20 and 21.
S After they are turned over into a horizontal posi-tion according to the process step II, these objects are folded in a U-shape in the area of the lo~er or centre transverse seam 32 (process step III). The actuating handle 33 is fed in from above in such a ~ay that the transverse ~eb 35 moves into the area bet~een the upper (half) transverse seams 31. Sea~ing is effected again in the area of the transverse seams 31 by sealing members 62 ~hile the transverse seams 31 are connected to the trans-verse ~eb 35 of the actuating handle 33.
The infus;on bag is no~ finished according to pro-cess stage IV. The actuating handle 33 is then swung via an intermediate position according to V into a packable position VI and bears against one of the subchambers 20 and 21. The finished infusion bag is then ~rapped in an aroma-tight foil packing.
Claims (12)
1. Infusion bag for making beverages from extractable substances in a container containing liquid comprising:
(a) a first and second subchamber, each subchamber formed by folding a double-layered filter paper and each subchamber accommodating in its interior a portion of the extractable substances, the filter paper of said first and second subchambers having upper and lower transverse edges and the filter paper of said first and second subchambers being connected to each other in the area of their respective lower transverse edges;
(b) rigid actuating means having a rigid actuating handle and a rigid transverse web, said rigid transverse web extending over the width of the subchambers and being integrally formed in one piece with the actuating handle, said rigid transverse web being connected to the filter paper of said first and second subchambers in the area of their respective upper transverse edge so that a hollow space is formed between the two subchambers, the hollow space being variable in shape and volume, and said rigid actuating means having sufficient rigidity such that by moving up and down the rigid actuating means, the subchambers carry out oppositely directed transverse movements relative to each other such that the hollow space changes in size and shape thus acting as a pumping chamber associated with a pumping effect of liquid through the subchambers housing the extractable substances while being supported on the container bottom.
(a) a first and second subchamber, each subchamber formed by folding a double-layered filter paper and each subchamber accommodating in its interior a portion of the extractable substances, the filter paper of said first and second subchambers having upper and lower transverse edges and the filter paper of said first and second subchambers being connected to each other in the area of their respective lower transverse edges;
(b) rigid actuating means having a rigid actuating handle and a rigid transverse web, said rigid transverse web extending over the width of the subchambers and being integrally formed in one piece with the actuating handle, said rigid transverse web being connected to the filter paper of said first and second subchambers in the area of their respective upper transverse edge so that a hollow space is formed between the two subchambers, the hollow space being variable in shape and volume, and said rigid actuating means having sufficient rigidity such that by moving up and down the rigid actuating means, the subchambers carry out oppositely directed transverse movements relative to each other such that the hollow space changes in size and shape thus acting as a pumping chamber associated with a pumping effect of liquid through the subchambers housing the extractable substances while being supported on the container bottom.
2. The infusion bag according to claim 1 wherein the upper and lower transverse edges are formed as transverse seams.
3. The infusion bag according to claim 1 wherein the actuating handle and the transverse web consists of a rigid plastic.
4. The infusion bag according to claim 1 wherein the first and second subchambers in the area of their lower transverse connection, are at a distance from one another so as to form a section free of extractable substances.
5. The infusion bag according to claim 1, wherein said rigid transverse web is positioned between the first and second subchambers in the area of their respective upper transverse edges.
6. The infusion bag according to claim 1 wherein the two subchambers are of approximately the same size and consist of a common complete blank or of two individual blanks which are connected at their edges by seams forming side seams and transverse seams wherein the subchambers are divided relative to each other by two transverse seams located next to each other.
7. The infusion bag according to claim 6 wherein the hollow space is variable in shape and volume, and in the area of side openings between the respective side seams of said first and second subchambers, the hollow space is provided with shut-off members which close at increased internal pressure in the hollow space to thereby close the side openings and open at reduced internal pressure in the hollow space to thereby open the side openings.
8. The infusion bag according to claim 7 wherein a shut-off member extending approximately up to the center plane of the subchambers is in each case attached to each side seam of the subchambers with adjacent shut-off members bearing against one another with sealing lips upon increased pressure in the hollow space.
9. The infusion bag according to claim 6 wherein the hollow space, in the area of side openings between the respective side seams of said first and second subchambers is provided with shut-off members that close at increased internal pressure in the hollow space to thereby close the side openings and open at decreased internal pressure in the hollow space to thereby open the side openings, the subchambers being formed from two blanks with the outer blank having a larger width than the inner blank, while blank strips are formed which form the shut-off members by folding over towards the inner blank and by subsequent folding of the blanks, connected to one another, in the area of transverse seams.
10. The infusion bag according to claim 6 wherein the hollow space, in the area of the side openings between the respective side seams of said first and second subchambers is provided with shut-off members that close at increased internal pressure in the hollow space to thereby close the side openings and open at decreased internal pressure in the hollow space to thereby open the side openings, the subchambers being formed from two blanks of the same width, with material strips being laterally fixed to the side seams and forming the shut-off members after folding of the blanks in the area of the transverse seams.
11. The infusion bag according to claim 10 wherein the blanks are formed from a continuous material with the material strips also being formed from a continuous material by central cutting of the latter and attaching to the blank.
12. Infusion bag for making beverages from extractable substances in a container containing liquid comprising:
a first and second subchamber, each subchamber formed by folding a double-layered filter paper and each subchamber accommodating in its interior a portion of the extractable substances, the filter paper of each subchamber being connected along edges of the subchambers to thereby form side seams, the filter paper of said first and second subchambers having upper and lower transverse edges and the filter paper of said first and second subchambers being connected to each other in the area and second subchambers being connected to each other in the area of their respective lower transverse edges: and rigid actuating means having a rigid actuating handle and a rigid transverse web, said transverse web extending over the width of the subchambers and being integrally formed in one piece with the actuating handle, said rigid transverse web being connected to the filter paper of said first and second subchambers in the area of their respective upper transverse edges so that a hollow space is formed between the two subchamers, the hollow space being variable in shape and volume and said hollow chamber, in the area of side openings between the respective side seams of said first and second subchambers being provided with shut-off members that close at increased internal pressure in the hollow space to thereby close the side openings and open at reduced internal pressure in the hollow space to thereby open the side openings, said rigid actuating means having sufficient rigidity such that up and down movement of the rigid actuating means causes the first and second subchambers to carry out oppositely directed transverse movements relative to each other such that the hollow space changes in size and shape thus acting as a pumping chamber associated with a pumping effect of liquid through the subchambers housing the extractable substances while being supported on a bottom portion of the container.
a first and second subchamber, each subchamber formed by folding a double-layered filter paper and each subchamber accommodating in its interior a portion of the extractable substances, the filter paper of each subchamber being connected along edges of the subchambers to thereby form side seams, the filter paper of said first and second subchambers having upper and lower transverse edges and the filter paper of said first and second subchambers being connected to each other in the area and second subchambers being connected to each other in the area of their respective lower transverse edges: and rigid actuating means having a rigid actuating handle and a rigid transverse web, said transverse web extending over the width of the subchambers and being integrally formed in one piece with the actuating handle, said rigid transverse web being connected to the filter paper of said first and second subchambers in the area of their respective upper transverse edges so that a hollow space is formed between the two subchamers, the hollow space being variable in shape and volume and said hollow chamber, in the area of side openings between the respective side seams of said first and second subchambers being provided with shut-off members that close at increased internal pressure in the hollow space to thereby close the side openings and open at reduced internal pressure in the hollow space to thereby open the side openings, said rigid actuating means having sufficient rigidity such that up and down movement of the rigid actuating means causes the first and second subchambers to carry out oppositely directed transverse movements relative to each other such that the hollow space changes in size and shape thus acting as a pumping chamber associated with a pumping effect of liquid through the subchambers housing the extractable substances while being supported on a bottom portion of the container.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3544263.8 | 1985-12-14 | ||
| DE19853544263 DE3544263A1 (en) | 1985-12-14 | 1985-12-14 | INFUSION BAG FOR THE PRODUCTION OF PARTICULAR COFFEE BEVERAGES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1286638C true CA1286638C (en) | 1991-07-23 |
Family
ID=6288445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000525196A Expired - Lifetime CA1286638C (en) | 1985-12-14 | 1986-12-12 | Infusion bag for making in particular coffee beverages |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4844914A (en) |
| EP (1) | EP0226133B1 (en) |
| JP (1) | JPS62220463A (en) |
| AT (1) | ATE41906T1 (en) |
| CA (1) | CA1286638C (en) |
| DE (2) | DE3544263A1 (en) |
| DK (1) | DK160361C (en) |
| ES (1) | ES2007564B3 (en) |
| GR (1) | GR3000060T3 (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8705448U1 (en) * | 1987-04-11 | 1987-08-27 | Naturstoff-Technik GmbH, 2863 Ritterhude | Infusion bag for making a coffee beverage |
| US4891232A (en) * | 1988-10-11 | 1990-01-02 | Dahl Derek W | Beverage infusion device |
| US5047252A (en) * | 1989-02-22 | 1991-09-10 | Nestec S.A. | Beverage infusion device and method |
| WO1992012660A1 (en) * | 1989-07-31 | 1992-08-06 | Charles Richard Dawes | Compact dispensing system |
| FR2659629B1 (en) * | 1990-03-19 | 1993-05-07 | Lanchier Jean Marc | METHOD AND DEVICE FOR MAKING COFFEE DIRECTLY IN A CUP FROM ROASTED COFFEE POWDER CONTAINED IN A BAG. |
| EP0448325B1 (en) * | 1990-03-21 | 1993-08-11 | Unilever Plc | Packets and packaging |
| US5318786A (en) * | 1992-09-03 | 1994-06-07 | Melvin Clarkson | Suspended beverage infusion bag |
| US5853780A (en) * | 1996-09-11 | 1998-12-29 | Kumar; Ajaya | Beverage making pencil |
| DE19835350A1 (en) * | 1998-08-05 | 2000-02-10 | Klaus Kister | Bag for preparation of coffee beverage especially in single-person households |
| DE19842526A1 (en) | 1998-09-17 | 2000-03-23 | Teepack Spezialmaschinen | Tea bag with two chambers, each made separately and subsequently brought together along one edge where they share a common holding tab |
| US6274180B1 (en) * | 1999-05-17 | 2001-08-14 | Jsd Partners | Expandable beverage infusion device |
| DE10019444C2 (en) * | 2000-04-19 | 2002-03-07 | Joerg Stemmler | tea bag packing |
| US20040131729A1 (en) * | 2003-01-02 | 2004-07-08 | Olivia Helprin | Beverage infusion device |
| US20050092185A1 (en) * | 2003-10-31 | 2005-05-05 | Magna Terra B.V. | Device for providing a drink from extracts, in particular tea extracts, and cover and container for use in such a device |
| US7744939B2 (en) * | 2004-03-22 | 2010-06-29 | Greco Paul V | Weighted infusion beverage package |
| US7591219B2 (en) | 2004-05-26 | 2009-09-22 | Pamela Saha | Disposable combined squeezer/stirrer/dispenser/brewer device |
| GB2417234A (en) * | 2004-08-16 | 2006-02-22 | G Mat Ltd | Tea bag with attached handle |
| US7849785B1 (en) * | 2005-05-18 | 2010-12-14 | Pamela Saha | Disposable combined squeezer/stirrer/dispenser/brewer device with bottom cup |
| US20090199721A1 (en) * | 2008-01-22 | 2009-08-13 | Hausslein Robert W | Single cup coffee brewer |
| GB2475943C (en) * | 2010-09-27 | 2012-07-11 | Howard Marc Gold | Cooking container and cooking method |
| FI9924U1 (en) * | 2011-09-29 | 2012-12-31 | Spotless Tea Bag Oy | Drink bag |
| TWM452702U (en) * | 2012-06-25 | 2013-05-11 | Zengye Xue Ying | Bond-type brewing material folding cover structure |
| US9737165B2 (en) * | 2013-12-23 | 2017-08-22 | David J Talarico | Device for the preparation of healthier tea bag infusuions |
| US9174795B1 (en) * | 2014-04-17 | 2015-11-03 | Mark Russell Holland | Tea bag pumper infusion apparatus with multi-purpose header attachments and waterproof apparatus handling and disposal container |
| GB2533616B (en) * | 2014-12-23 | 2018-09-05 | Milne Downie Donald | Infusion Device and Method of Making Same |
| US10582785B2 (en) | 2016-08-20 | 2020-03-10 | Marat Purliyev | Infusion package mover |
| US12029377B2 (en) * | 2021-07-08 | 2024-07-09 | ZHF Group, LLC | Vacuum bag |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1362054A (en) * | 1920-10-12 | 1920-12-14 | Jr George H Stockman | Tea-brewing appliance |
| US1665080A (en) * | 1928-01-14 | 1928-04-03 | William T Abbott | Individual tea bag |
| DE566910C (en) * | 1931-06-09 | 1932-12-23 | Georg Schwabe | Middle shot guard |
| US2072976A (en) * | 1932-09-19 | 1937-03-09 | Orrin E Andrus | Water purification |
| US2123054A (en) * | 1937-08-05 | 1938-07-05 | Lamb Veronica | Coffee making device |
| US2143302A (en) * | 1938-04-13 | 1939-01-10 | Mutual Tea Packing Co Inc | Bag containing beverage material |
| US2285113A (en) * | 1938-10-14 | 1942-06-02 | William G Eaton | Muddling or dunking device |
| US2291278A (en) * | 1939-05-13 | 1942-07-28 | Pneumatic Scale Corp | Tea or coffee bag |
| US2272530A (en) * | 1940-05-08 | 1942-02-10 | Pneumatic Scale Corp | Method of making and filling tea bags, coffee bags, and the like |
| US2362459A (en) * | 1942-02-07 | 1944-11-14 | Nat Urn Bag Co Inc | Infusion package and the manufacture thereof |
| US2359292A (en) * | 1942-07-09 | 1944-10-03 | Nat Urn Bag Company Inc | Infusion package with handle |
| DE914425C (en) * | 1944-04-27 | 1954-07-01 | Seelig & Hille R | Foldable bags, in particular infusion bags |
| US2922717A (en) * | 1956-09-14 | 1960-01-26 | Pneumatic Scale Corp | Infusion bag |
| US2954294A (en) * | 1957-05-17 | 1960-09-27 | Pneumatic Scale Corp | Infusion bag |
| US3053665A (en) * | 1957-08-23 | 1962-09-11 | Nat Tea Packing Company Inc | Manufacture of infusion bags |
| GB881784A (en) * | 1958-08-02 | 1961-11-08 | John Henrik Guy Welin Berger | Improvements in the manufacture of packages, especially of the infusion bag type |
| US2925171A (en) * | 1958-10-13 | 1960-02-16 | Pneumatic Scale Corp | Infusion bag and method of making the same |
| DE1795868U (en) * | 1959-03-19 | 1959-09-17 | Suewa Bayer Suesswarenvertrieb | Infusion bags. |
| US3257212A (en) * | 1962-06-05 | 1966-06-21 | Kasket Margot | Non-floating beverage package |
| DE1283456B (en) * | 1965-08-31 | 1968-11-21 | Adolf Rambold | Infusion bags, especially for tea |
| US3597222A (en) * | 1968-03-22 | 1971-08-03 | Thaddeus John Kalemba | Infusion packet |
| US3607302A (en) * | 1969-12-16 | 1971-09-21 | Russell C Beck | Coffee bag |
| US3833740A (en) * | 1971-06-17 | 1974-09-03 | Jacobs Joh & Co | One-portion pack for the preparation of ground roasted coffee ready for drinking |
| CH566910A5 (en) * | 1972-07-26 | 1975-09-30 | Rambold Adolf | |
| CH587642A5 (en) * | 1975-03-25 | 1977-05-13 | Sig Schweiz Industrieges | |
| DE2715582C2 (en) * | 1977-04-07 | 1979-09-06 | Juergen 3321 Salzgitter Zimmermann | Device for producing a beverage from ground coffee beans with a chamber delimited by filter walls for receiving the coffee grounds |
| US4229481A (en) * | 1978-06-16 | 1980-10-21 | Fornari Hector C | Process and means to make aromatic infusions |
| JPS558445U (en) * | 1978-07-04 | 1980-01-19 | ||
| US4278691A (en) * | 1980-03-17 | 1981-07-14 | Angelo Donarumma | Coffee infusion bag |
| JPS641261Y2 (en) * | 1981-06-03 | 1989-01-12 | ||
| ATE20656T1 (en) * | 1982-05-28 | 1986-07-15 | Nicolas Goedert | METHOD AND APPARATUS FOR MANUFACTURE OF FILTER BAGS FOR FRESHABLE PRODUCTS. |
| US4443481A (en) * | 1983-02-14 | 1984-04-17 | Angelo Donarumma | Coffee infusion container |
| BE899152A (en) * | 1983-11-28 | 1984-07-02 | Atoll S A | TEA BAG SYSTEM. |
| US4605123A (en) * | 1983-12-15 | 1986-08-12 | Ethyl Corporation | Infusion package |
| GB8409040D0 (en) * | 1984-04-06 | 1984-05-16 | Gen Foods Ltd | Beverage infuser |
| US4651870A (en) * | 1985-04-01 | 1987-03-24 | Frank Giambalvo | Controlled infusion containers and method of manufacture |
-
1985
- 1985-12-14 DE DE19853544263 patent/DE3544263A1/en not_active Withdrawn
-
1986
- 1986-11-25 DK DK565886A patent/DK160361C/en not_active IP Right Cessation
- 1986-12-03 DE DE8686116837T patent/DE3662674D1/en not_active Expired
- 1986-12-03 EP EP86116837A patent/EP0226133B1/en not_active Expired
- 1986-12-03 AT AT86116837T patent/ATE41906T1/en not_active IP Right Cessation
- 1986-12-03 ES ES86116837T patent/ES2007564B3/en not_active Expired - Lifetime
- 1986-12-12 CA CA000525196A patent/CA1286638C/en not_active Expired - Lifetime
- 1986-12-12 US US06/941,174 patent/US4844914A/en not_active Expired - Fee Related
- 1986-12-15 JP JP61296850A patent/JPS62220463A/en active Granted
-
1989
- 1989-05-12 GR GR89400061T patent/GR3000060T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK565886A (en) | 1987-06-15 |
| DK160361B (en) | 1991-03-04 |
| DK565886D0 (en) | 1986-11-25 |
| ATE41906T1 (en) | 1989-04-15 |
| JPH0116751B2 (en) | 1989-03-27 |
| DK160361C (en) | 1991-09-16 |
| ES2007564B3 (en) | 1990-09-16 |
| GR3000060T3 (en) | 1990-10-31 |
| DE3662674D1 (en) | 1989-05-11 |
| DE3544263A1 (en) | 1987-06-19 |
| JPS62220463A (en) | 1987-09-28 |
| US4844914A (en) | 1989-07-04 |
| EP0226133B1 (en) | 1989-04-05 |
| EP0226133A1 (en) | 1987-06-24 |
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